DIN EN ISO 14583 - 2011 Hexalobular Socket Pan Head Screws

Unit: 毫米(mm)

Thread Size
d

M2.5

P	Pitch
a	max
d_k	max=nominal size
d_k	min
d_a	max
k	max=nominal size
k	min
r	min
R	≈
x	max
Socket No.
A	Ref.
t	max
t	min

0.4	0.45	0.5
0.8	0.9	1.0
4	5	5.6
3.7	4.7	5.3
2.6	3.1	3.6
1.6	2.1	2.4
1.46	1.96	2.26
0.1	0.1	0.1
3.2	4.0	5.0
1.0	1.1	1.25
6	8	10
1.75	2.4	2.8
0.77	1.04	1.27
0.63	0.91	1.01

per 1000 units ≈ kg(7.85kg/cm3)

Thread Length
b

①,ds = thread diameter or ≈ pitch diameter
①,min
②,Material: a)Steel, Strength class: 4.8. Standard ISO 898-1 b)Stainless steel, Strength class: A2-70，A3-70. Standard ISO 3506-1 c)Non-ferrous metal, Strength class: subject to agreement. Standard ISO 8839

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